(3GdhGaj aj TQM GdCQHYjf GdfhhjI (B/ s - (3GdHZG, eUWais; (3eSJh, eMji GdOjf OjHs ((3OeTb (B:s (3OGQ Gdcde GdWjH,s, 1997)
Keywords: (3GdCMGOjKs; (3GdJaSjQs